L78L09ACD

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Linear voltage regulators are an important component in any power circuit. Such devices work to regulate and maintain a steady voltage in electronic circuits, regardless of load and other factors. The L78L09ACD is a watts series, 9V linear voltage regulator that can be used to power any number of devices. This device is an inexpensive, general-purpose, low-power solution for many digital and analog applications.

The L78L09ACD is a three-terminal, positive-voltage regulator with integrated short-circuit protection, thermal shutdown, and thermal overload protection. The operating temperature range is from 0°C up to 125°C, with a total quiescent power dissipation of only 1.6 watts. The device has a steady voltage output of 8.8V to 10.2V, while also having a wide input-voltage rating of 7V to 15V, suitable for many types of power sources. The Polarity, Capacitive Load and Stability characteristics of this device are all considered excellent.

The L78L09ACD is a classic linear voltage regulator, meaning the output voltage is proportional to the input voltage, with a ratio of roughly 0.8 – 1.2. This is achieved by having the device convert excess input voltage into heat, by essentially dropping the excess voltage across an internal resistor. The regulating is done by a control element, and in the L78L09ACD it is a field-effect transistor (MOSFET) that requires a larger voltage to turn it on, and therefore maintain the same output voltage. This makes this device particularly efficient in applications where the load is small, but the output voltage is critical.

There are several applications that can be put to use with the L78L09ACD, such as portable electronic devices, audio amplifiers, set-top boxes, and automotive electronics. This device can also be used as a power supply for logic and interface circuits, allowing a very stable power output. The 10.2V operating voltage gives this device an edge in many applications where a higher voltage is required.

The L78L09ACD is a great choice for many power-supply applications. Its excellent field stability, wide input voltage range, and low power consumption make it an excellent option for many applications. Its low price and easy to use design make it an attractive choice for those projects that require a steady, general purpose voltage regulator.

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